The Sandö Bridge is a concrete arch bridge

Arch bridge

An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by transferring the weight of the bridge and its loads partially into a horizontal thrust restrained by the abutments at either side...

 crossing the Ångermanälven river in the Kramfors

Kramfors

Kramfors is a locality and the seat of Kramfors Municipality in Västernorrland County, Sweden with 6,235 inhabitants in 2005.Geographically the town is situated on the western shore of the Ångerman River. This river was the reason that Kramfors was founded, because in the 19th century it was a...

 municipality in the province of Ångermanland

Ångermanland

' is a historical province or landskap in the north of Sweden. It borders to Medelpad, Jämtland, Lapland, Västerbotten and the Gulf of Bothnia. The name "Ångermanland" comes from the Old Norse "anger", which means "deep fjord" and refers to the deep mouth of the river Ångermanälven...

 in northern Sweden

Sweden

Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....

. It has a free span of 264 meters and is 42 meters above the water.

The area is often referred to as The High Coast

The High Coast

The High Coast is a part of the Swedish coast on the Gulf of Bothnia, situated in the municipalities of Kramfors, Härnösand and Örnsköldsvik and notable as a type area for research on post-glacial rebound and eustacy, in which the land rises as the weight of the glaciers melts off of it...

.

During the construction, the bridge collapsed on August 31, 1939, and 18 workers were killed. This accident was given little attention by the press, since the World War II

World War II

World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

 started the day after.

The bridge was opened in 1943. Until 1964, it was the largest concrete arch in the world. It was renovated after 1997 and reopened in 2003.

In 1997, the Sandö bridge was replaced as main road connection by the Höga Kusten Bridge

Höga Kusten Bridge

The High Coast Bridge is a suspension bridge crossing the mouth of the Ångermanälven river near Veda, on the border between the Härnösand and Kramfors municipalities in the province of Ångermanland in northern Sweden. The area is often referred to as The High Coast, hence its name...

, the new bridge across the river, in a new extension of the European route E4

European route E4

European route E 4 passes from north to south through Sweden from the border with Finland, total length . The Finnish part lies entirely within Tornio in northern Finland, and is actually only long...

.